A few years ago, you couldn't get an equivalent camera for 3-4x the cost of a Sunba.

I have three Sunba 601-D20X's running under Security Spy. For $330 at Amazon, they provide 20x zoom, POE+ cameras that have pretty fast panning, good IR range. The Sunbas have become my most important cameras out of the 12 on my system. They are physically big, but I painted my housings completely black. So, they blend in better with the landscaping. Mine have survived mounting on lamp posts with direct exposure to sun, wind, relentless rain, sub-freezing cold & snow.

They work great with Security Spy once you configure them correctly. The only thing that doesn't work (yet) is setting & recalling PTZ presets from within Security Spy. Meanwhile, manual PTZ control works well.

BTW, be sure to get the POE+ version. Makes for a lot easier, single cable wiring. You'll also need a POE+ switch like the Edimax GS-5008PL (8 remote manageable POE+ ports & gigabit $140) or some POE+ power injectors.

Another big plus is how responsive the Sunba support team is if you have any issues. Sometimes it seems they are awake 24 hours/day.

I've now also have a nice Dahua Starlight PTZ 25x for about the same cost of a Sunba. Sharper optics, more mature firmware, and PTZ presets that "mostly" work with Security Spy. Three Sunba's and this Dahua SD49225T-HN are on my system now. When I get another PTZ, it will be another Dahua SD49225T-HN.